President Donald Trump asked the Supreme Court on Tuesday to make it easier for his administration to deport people to South Sudan and other countries that are not their homeland, the latest in a series of controversial immigration policies the administration has put before the conservative-majority high court.

The emergency appeal came after a judge found the White House violated a court order with a deportation flight to the African nation.

A judge ordered that six migrants must remain in US custody in South Sudan, rejecting Trump's request and further straining tensions between the president and federal courts.